Shock-absorber for vehicles.



T. A. BELL.

SHOCK ABSORBER FOR VEHICLES.

APPHCATION "FILED NOV. 10. 191-4.

Patented m 19, 1915.

ZWEE

dffi dllifati ANDREW BELL, 01F KLEW, MELIEOURNE, VICTORIA, AUSTRALIA.

SHOCK-ABSORBER FOR VEHICLES.

fipecificatf pn of Letters Patent.

Patented @ct. to, 119.

Application filed November 10, 1914. Serial Ito. 871,374.

To all whom it may concern.

' Be it known that I, THOMAS ANDREW BELL, a subject of the King of Great Britain and Ireland, and a resident of the post-town of Kew, a suburb of the city of Melbourne, in'the county of Bourke, State of Victoria, Commonwealth of Australia, (whose postoliide address is 24- Queen street, in the said post-town of Kew,) have invented certain new and useful Improvements in Shock-Absorbers for Vehicles, of which the following is a specification.

This invention relates to shock absorbing d vices interposed between a vehicle axle or axles and the body thereof to nullify the rebound of the vehicle springs .whenroad inequalities are encountered. Hitherto numerous devices have been proposed, particuilarly for use with motor driven vehicles, whereby the rebound is reduced and greater comfort provided for the occupants of the vehicle. Many of these devices havebeen of a complicated nature, liable to breakage, and ineffective or not sufficiently smooth in action. Spring devices are particularly objectionable in some of these respects.

The object of the present invention is to provide a cheap, simple, easily applied absorbin-g or nullifying device consisting of but few parts none of which are liable to derangement and which do not require close lid ttention.

The invention has proven very efficient when applied to a motor car, an absorber being employed near each end of the front and back axles.

What are considered to be the featuresof novelty will be pointed out in the appended claims.

Referring to the drawings which form a part of this specification,Figu1-e 1 is a side view of the invention, a closing plate and a lever being removed for convenience of illustration. Fig. 2 is a sectional plan of Fig. 1. Fig. 3 is a perspective view of a crank shaft and a brake segment. Fig.4 is a sectional detail view of a modification. Fig. 5 is a detail view of a further modification. Fig. 6 is a side elevation showing the invention applied to portion of a vehicle between; an axle spring and the body thereof.

The invention is disposed above, an axle spring 2 of a vehicle to which spring is secured a plate or the like 3 carrying a pivot pin 4 pivoted to which is the lower end of a. link 5 the upper end of which is pivoted by a crank pin 11.

segment.

formed of canvas or other suitable material pivot pin 6 to one end of a lever 7. The other end of the lever 7 is securedto the outer end of a crank shaft 8 having a crank arm formed in which is a passageway having a back 10. Extending across the passageway and carried by the crank arm 9 is a The crank pin 11 passes through one of a series of adjusting holes 12 formed in the web 13 of a brake segment provided with a rim 14. The segment has a free advancing end terminating in or providing a limit stop 15 and a retarding return end terminating in an in' ardly projecting protuberance 16. a

Secured to the rim 14c of the brake segment, by screws 17 or the like, is a brake lining 18 having a free advancing end and a retarding return end to correspond with the The brake lining is preferably embedded in which is wire mesh or wire threads. H

Projecting inwardly from the rim 1% is a protuberance or stud 19 engaging which is the outer end of a helical spring 20, the inner end of which passes into a hole formed in the crank arm 9. h

Engaged by the brake lining 18 is a drum 21 having a back 22 provided with a boss 23 and secured by lugs 24 or the like to the vehicle chassis or body. Secured by-bolts 25 or the like to the drum 20 is a closing plate 26 having a boss 27. i The crank shaft 8 isinounted in the bosses 23 and 27.

in a modification a spring chamber, indicated at 28, is formed in the crank arm 9. l. ssing from the chamber 28 is a threaded hole, indicated at 29, accommodating the threaded shank 30 of an ad usting screw having a head 31 and a lock nut 32. lVithin the chamber below the screw is a. phi of disk 33. The inner end of the spring 2'.) bears against the plunger or disk 33 within the chamber 28 the tension of the spring 20 being adjusted by turning the threaded shank 30. In a further modification, the spring 20 may be dispensed with and a crank extension 34 project from the crank arm 9 into close proximity or adjacent to the pro tuberance- 16 of .the brake segment. The outer-end of the extension just clears the protuberance.

in applying the invention to a motorcar or the like an absorber is rovided for each spring of the vehicle and therefore adjacent each wheel thereof.

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segment advances freely and without re-' [to accord with var tardation. Immediately the axle of the vehicle rises when leaving the hollow the link i'i also rises operating the lever 7 and crank shaft 8 in the reverse-iiirection. The spring .20 retains the brake lining 18 in contact with the drum 21 andain account of the position of the crank pin 11 in relation to the web 13 of the"brake segment the retarding return end-ot' the said segment grips the drumJtZL' and null'ilies the. rebound of the spring; the movement of the segment'belng slowfi" By varying the position of the crank "rr"11 in relation to th weh lilby means of the adjusting holes,if the retarding move- .ment of the brake segment may be varied i ving circun'istances and loads.

In tliein odification seen in Fig. 4 the tension of the spring 20 mav be varied, In the modification seen in Fig. 5 the spring may be dispensed with the protuberance 16 immediately engaging the extension 3-4 and retaining the retarding return end of the brake segment in contact with he drum :21 upon the return movement of the saidfsegment. The extension -H. therefore, takes the place of the spring 20.

Having now described my invention what 1 I claim as new and desire to secure by Lettc'rs Patent is:

1. Improvements in shock absorbers for vehicles consisting in a drum. a crank shaft having a crank pin mounted in said drum, a brake segment having a free advancing end pivoted to the crank pin. means for adjusting the crank pin in. relation to thesegment. said advancing end forming a limit stop to engage the. crank. a brake lin.- lug carried by the segment and engaging the drum. and a spring disposed between the segment-and crank shaft. 2. Improvements in shock absorbers for vehicles. consist-ing in a drum. a crank shaft having a crank pin mounted therein, a. brake segment having an advancing end pivoted to the. crank pin, a series of adjusting holes in said advancing end, said advancing end forming a limit stop to engage the crank, a. spring disposed between the crank shaft and the segment, and means for tension oi said spring.

3. improvements in shock absorbers for adjusting the vehicles, consisting in a drum, a crank shaft having a. crank pin mounted therein, a brake segment 'having an advancing end pivoted to the crank pin, a series of adjusting holes formed in said advancing end, said advancing end forming a limit stop, a brake lining secured to the segment, a spring engaging the segment. a spring chamber formed in the crank shaft, said spring projecting into said chamber, a plunger within the chamber and engaging the spring, and an ad usting screw engaging the plunger.

"l'. Improvements in shock absorbers for vehicles. consisting in a drum having a back, lugs projecting from said back, a closing [plate secured to the drum. a crank shaft mounted within the drum, said shaft having a crank pin. a brake segment having a web pivoted to the crank pin. a series of adjusting holes formed in said web, a rim carried by the web. a brake lining secured to the rim. said segment having a free ad 'ancing end forming a limit stop. a protuberance projecting from the web. a spring encircling said protuberance at its one end. the other end otthe spring being secured to the crank sha it a lever secured to one endavt the crank shaft. and a link pivoted to the lever. said link being operated by the road inequalities.

5. In'iproveiu uts in shock absorbers for vehicles. consist-ing in a drum having a back, lugs projecting from said back and secured to the vehicle, a closing plate. secured to said drum, a crank shaft mounted in said drum. said shaft having a crank pin, av brake segment having a web. said web having a free advancing end and a. retarding return end. the advancing end of the web being pivoted to thecrank ing holes being formed in the advancing end of the web, a rim carried by the web, a brake lining carried by the, rim, :1 protuberance projecting from the. web, a. spring encircling said protuberance at its one end, said crank shat't having a spring chamber formed therein, the other end of the spring projecting into said chamber. a plunge-r within the chamber, an adjusting screw carried by the crank shaft and engaging the. plunger, a lever secured to one end of the crank shaft, and a link pivoted to the lever, said link being operated by the road inequalities.

In testimony whereof I have hereunto affixed my signature in the presence of two subscribing witnesses.

THOMAS ANDREW BELL.

Witnesses:

ticcn. McSLAs'rmEn, liusk ll. Bars.

pin, a. series of adjust- 

